Question about 1995 Chevrolet Cavalier

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We don't have a distributor cap but a coil pack and the problem is that we need to change the spark plug wires but we are not sure how to do this since we cannot even see the coil pack. Does anyone have any suggestion on how to do this? And does the coil pack ever get cracked like distributor caps do because if changing the wires doesn't help the roughness of the car running when its raining out I am assuming besides the plugs it could be the coil pack cover.

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Yes they can go bad/ crack ect. But bad/old plugs cause undue stress on wires and coils, so make sure the spark plugs are the correct AC DELCO Platinum spark plugs, and just replace the spark plug wires one at a time. Take a spray bottle (windex works good) and wet the spark plug wires ans see if you can find where they may be arcing.

Posted on Sep 02, 2010

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If the problem only occurs when its raining. The best way to duplicate this condition is to use a spray bottle (mist perferred)
filled with water and spray what you believe is the effected area, while the vehicle is ideling and observe the actions of the engine. This way you can pinpoint the item and spend the money on what you know is causing the problem.
Remember 02 sensors can cause a rough running condition and may not give you a code because of its infrequency.












































































Posted on Sep 02, 2010

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I am carsandcomps from Fixya.com. My name is Brandon. In order to replace your spark plug wires and spark plugs (best to do both) - do one at a time. Start from one side of the engine (ex: drive front/back) depending on your engine position; doesn't really matter, just start at one side.
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Where is the distrubitor cap located on a 2001 dodge neon i drove through a puddle and everyone is saying i need to dry the cap but i dont know where it is located


I don't know for sure either - many newer cars don't have distributor caps. The easiest way to accomplish the task is to trace a couple of spark plug wires back from the engine block to the coil pack or distributor cap - whichever you have. Wipe off any water on whatever these wires go to. If you have a cap, and if you are having rough-running problems, take off the cap and wipe out the inside with a clean rag. Coil packs should be hermetically sealed and the only place for a problem would be right at the spark plug wire connection terminals or possibly at the low-voltage connection.

A quick way to distinguish a distributor cap from a coil pack if you don't know the difference: count the high voltage wires. The distributor will generally have one more than the number of cylinders; the extra goes to a separate coil. A coil pack will wires going to two cylinders in each section, but will never have more high-voltage wires than the number of cylinders.

You should also inspect the air duct, especially the air filter. Dry out any water here just to make sure you don't **** mud into the engine.

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I have a 2001 Ford Expedition 4.6 4WD. Service engine soon light came on and when checked at parts store diagnostics said cylonder #2 miss firing. Is this a coil pack because we can't find plugs,...


If you do not see a distributor or spark plug wires, then you have a coil over plug system. Changing the coil pack is as easy as removing the hold down bolt and lifting the coil pack off the spark plug. Other things should be checked like signal to the coil, the fuel injector signal and the spark plug

Sep 05, 2010 | 2001 Ford Expedition

1 Answer

Reading number 3 cyl miss fire


Make sure the plug wires are correctly placed on the distributor cap (coil pack). In most cases, (when these are changed) two are accidentally switched.

Simply take two at a time and switch them. (refer to a repair maunal for firing order first). You can look this up online as well at http://www.google.com.

If these are correctly placed, then pull the wires (one at a time) from the plugs, and pull the plugs out and check for oil on the plug. If any one of these has oil, then you may have found your miss fire.

If all there is good (clean these and run truck); pull the distrubutor cap off (if equipped) and make sure the rotor (just under cap in center) is not cracked or warn (check end where small metal end is located). This sparks at each plug point on the distrubutor cap.

That is the next thing to check. On the inside of the cap. look to see that the prongs are not white, grooved, or broken. If any of these are true, replace both cap and rotor. Some rotors pull off, others have a small screw that hold them in palce which is located on the side.

If you're truck has coil pack(s) then have them all (if more than one) tested. These sit on a unit called a modular. Look at the modular after removing the packs and see that it is not bubbling, white, or melted. If any of these are true, it needs replaced as these cannot be tested.

Contact your local automotive parts store for correct parts and pricing. NOTE: some parts (seldom) may need to be purchased from dealer. This is rare, but sometimes an only option.

Also, if you have a distributor, check to make sure the coil wire (center of cap) is pushed on completely on the cap as well as the coil. (coil may need replaced as well) which also cannot be tested.

If need be, and you have not already, replace all of the following to ensure all is good:

plugs, plug wires, cap and rotor, coil, (the coil wire will come with the plug wires, but make sure when purchasing).

If coil packs are present instead of distributor, replace the following:

plugs, plug wires, any coil packs that are tested back, modular if it looks anything like that described above. Also remember to check for oil residue, or blackened powder on the spark plug ends.

If any, replace as necessary. When you replace spark plugs and wires do the following to ensure the firing order remains:

Pull one plug at a time. Take plug wire off the plug only, until new plug is inserted; then replace the appropriate length plug wire. (compare old to new; some may be close in length, but not exact as these are aftermarket plug wires).

Do this for each plug and wire. Save the coil wire for last to know you are finished with all: coil wire is the shortest of all (usually) and only goes on once way at each end: typically. One end will be straight - this goes to the coil. (not coil pack) the other end will be a 90 degree; this goes on the center port on the distributor.

If coil packs are present, there will not be a coil wire, as the coil packs replaced this unit.

My apologies for the lengthy reply, however this is to ensure you save time, money, and are aware of the different options and possibilities.

Please let me know if you need any further assistance.

carsandcomps

Guru, Premium Expert @ Fixya.com

May 14, 2010 | 1996 Toyota Tacoma

1 Answer

Car stalls


Hello and thank your for choosing fixya.com. I suggest changing the fuel filter and air filter to begin with. If that doesn't fix it, you may have a couple of plugged fuel injectors, or you may need to replace the coil pack and modular or distirbutor cap and rotor (whichever is equipped); either one, it is a good idea to also change the spark plugs and wires. Coil packs can be tested to determine whether they're good or not. Distributor caps and rotors will have obvious damage that will indicate the need for replacement. Modulars may have a melted, or bubbled look to the material on top of them (coil pack(s) ) removed. If the modular is bubbled, replace it, keeping the original coil pack(s) and try that - also, if equipped with a distributor; before replacing cap and rotor, make sure that the coil wire is secure at both end. (it will be the center wire in the distributor cap) and runs to the coil.
Please let me know if you need further information or have any other questions or comments. Thank you again for choosing fixya.com.

Apr 01, 2009 | 1996 Mercedes-Benz C-Class

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